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        <section id="main"><article id="post-HTML5音视频" class="article article-type-post" itemscope itemprop="blogPost">
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    <a href="/2019/10/13/HTML5音视频/" class="article-date">
  <time datetime="2019-10-13T01:44:00.000Z" itemprop="datePublished">2019-10-13</time>
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    <a class="article-category-link" href="/categories/HTML5/">HTML5</a>
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      HTML5音视频
    </h1>
  

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<h2 id="认识-video"><a href="#认识-video" class="headerlink" title="认识 video"></a>认识 video</h2><ul>
<li><p>video 标签定义视频，比如电影等</p>
</li>
<li><p>支持的视频格式：mp4、webm、ogv</p>
</li>
</ul>
<h3 id="video-的兼容性"><a href="#video-的兼容性" class="headerlink" title="video 的兼容性"></a>video 的兼容性</h3><ul>
<li><p>Google、Firefox 和 Opera 三种格式全部支持</p>
</li>
<li><p>Safari 浏览器不支持 video 的 webm 和 ogv 视频格式</p>
</li>
<li><p>IE8 以下均不支持 video 标签</p>
</li>
</ul>
<p>source 标签也可以放入 src，如果播放失败，video 会继续看下一个 source 标签，直到兼容</p>
<h2 id="video-属性"><a href="#video-属性" class="headerlink" title="video 属性"></a>video 属性</h2><table>
<thead>
<tr>
<th>属性</th>
<th>作用</th>
</tr>
</thead>
<tbody><tr>
<td>src</td>
<td>视频的资源地址</td>
</tr>
<tr>
<td>width</td>
<td>视频宽度</td>
</tr>
<tr>
<td>height</td>
<td>视频高度</td>
</tr>
<tr>
<td>controls</td>
<td>播放控件</td>
</tr>
<tr>
<td>autoplay</td>
<td>自动播放</td>
</tr>
<tr>
<td>loop</td>
<td>循环播放</td>
</tr>
<tr>
<td>poster</td>
<td>视频封面，没有播放时显示的图片</td>
</tr>
<tr>
<td>muted</td>
<td>当设置该属性后，它规定视频的音频输出应该被静音</td>
</tr>
</tbody></table>
<p>注意：autoplay 在Chrome上不会自动播放</p>
<h2 id="video-API-事件"><a href="#video-API-事件" class="headerlink" title="video API 事件"></a>video API 事件</h2><table>
<thead>
<tr>
<th>事件</th>
<th>描述</th>
</tr>
</thead>
<tbody><tr>
<td>play</td>
<td>让视频播放/不在暂停时</td>
</tr>
<tr>
<td>pause</td>
<td>让视频暂停/不在播放时</td>
</tr>
<tr>
<td>duration</td>
<td>返回当前视频长度</td>
</tr>
<tr>
<td>currentTime</td>
<td>设置或返回当前视频的总长度，秒为单位</td>
</tr>
<tr>
<td>src</td>
<td>设置/返回当前视频的来源</td>
</tr>
<tr>
<td>volume</td>
<td>设置/返回当前视频的音量</td>
</tr>
<tr>
<td>controls</td>
<td>设置视频是否显示控件</td>
</tr>
<tr>
<td>muted</td>
<td>设置视频是否静音</td>
</tr>
<tr>
<td>networkState</td>
<td>返回视频的当前网络状态</td>
</tr>
<tr>
<td>currentSrc</td>
<td>返回当前音视频的URL，必须是视频加载完成时</td>
</tr>
<tr>
<td>ended</td>
<td>返回音视频的播放是否已结束</td>
</tr>
<tr>
<td>loop</td>
<td>设置或返回视频是否应在结束时重新播放</td>
</tr>
<tr>
<td>playbackRate</td>
<td>设置或返回视频播放的速度</td>
</tr>
<tr>
<td>readyState</td>
<td>属性返回视频的当前就绪状态</td>
</tr>
<tr>
<td>timeupdate</td>
<td>目前的播放位置已更改时</td>
</tr>
<tr>
<td>seeked</td>
<td>当用户已移动/跳跃到视频时的新位置时</td>
</tr>
<tr>
<td>seeking</td>
<td>当用户开始移动/跳跃到视频中的新位置时</td>
</tr>
<tr>
<td>volumechange</td>
<td>当音量已更改时</td>
</tr>
</tbody></table>
<h3 id="networkState-属性值"><a href="#networkState-属性值" class="headerlink" title="networkState 属性值"></a>networkState 属性值</h3><table>
<thead>
<tr>
<th>属性值</th>
<th>描述</th>
</tr>
</thead>
<tbody><tr>
<td>0</td>
<td>NETWORK_EMPTY - 音频/视频尚未初始化</td>
</tr>
<tr>
<td>1</td>
<td>NETWORK_IDLE - 音频/视频是活动的且已选取资源，但并未使用网络</td>
</tr>
<tr>
<td>2</td>
<td>NETWORK_LOADING - 浏览器正在下载数据</td>
</tr>
<tr>
<td>3</td>
<td>NETWORK_NO_SOURCE - 未找到音频/视频来源</td>
</tr>
</tbody></table>

      
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